State-dependent flow instability of a silty loess
| Autor: | Fangzhou Liu, Qiang Xu, X. Zhang, J. D. Frost, Y. Zhang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Flow (psychology)
0211 other engineering and technologies Liquefaction Landslide 02 engineering and technology Loess plateau 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Flow instability State dependent Loess Earth and Planetary Sciences (miscellaneous) Compressibility Geotechnical engineering Geology 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | Géotechnique Letters. 9:22-27 |
| ISSN: | 2045-2543 |
| DOI: | 10.1680/jgele.18.00141 |
| Popis: | The flow instability of intact and reconstituted silty loess recovered from the loess plateau of China are studied under undrained monotonic loading using conventional triaxial tests; flow instability has been postulated as the primary cause for loess flowslides. The experimentally determined critical state lines of intact and reconstituted silty loess appear to be non-linear and the flow behaviours are state-dependent with non-unique instability lines. The effect of structure of intact silty loess can either impede or facilitate the onset of flow instability depending on the state of the soil. A previously proposed modified state parameter is employed to better characterise the flow behaviours of silty loess, with a revised range and corresponding descriptors. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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